QTimer with QProgressbar

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Hi,

I am trying to make my progressbar flow by time so I connected a progressbar to a QTimer. Here is my code:

void MainWindow::progressbarTimer(QString TimeSet)
{
    ui->progressBar->setMaximum(TimeSet.toInt()*1000);
    QTimer *timer = new QTimer(this);
    currenttime = TimeSet.toInt();
    connect(timer, SIGNAL(timeout()), this, SLOT(updateProgresbar()));
    timer->start(1);
}

void MainWindow::updateProgresbar()
{
    if(counter <= currenttime*1000)
    {
        counter++;
        ui->progressBar->setValue(counter);
    }
    else
    {
        timer->stop();
        delete timer;
    }
}

Unfortunately I can't seem to input parameters into the updateProgresbar slot to make use of the timer in the function. Anyone got a solution for this? Thanks in advance!

SGaist

Hi,

You declare timer in progressbarTimer so it's not the same as the one you have in updateProgresbar.

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@SGaist Hi, thanks for your reply. I know it is not the same. My question is how I can get it the same.

Jeroentjehome

Hio,
What SGaist said is that your timer (QTimer) in void MainWindow::progressbarTimer() has function scope. So when you end the function, the timer variable is no longer available. Because you don't delete it and it has a signal/slot connection the timer is still active in the eventloop. So calling the updateProgressBar is no problem. To reference again to that timer is not valid!! the timer-> will give errors??